# Tag: Investor Relations

- [Ambipar replaces investor relations chief amid judicial recovery](https://brazilstockguide.com/insights/ambipar-investor-relations-change-judicial-recovery/) (2026-01-20): Board reshuffle follows end of executive term as company remains under court protection.
- [Cosan Overhauls Board as BTG and Perfin Bloc Gains Influence; Raízen Mirrors CFO Shift](https://brazilstockguide.com/insights/cosan-overhauls-board-as-btg-perfin-bloc-gains-influence-raizen-mirrors-cfo-shift/) (2025-11-14): Corporate reshuffle marks a power realignment: long-time Ometto-aligned directors exit Cosan’s board as BTG Pactual and Perfin strengthen control.